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🚀 Elevate your smart projects with motion that moves you!
The Stemedu HC-SR501 PIR Sensor is a high-precision infrared motion detection module designed for Arduino, Raspberry Pi, and home automation systems. With a maximum detection range of 21 feet, corded power supply, and compact design, this pack of 5 sensors offers reliable, scalable solutions for security and automation enthusiasts.
| ASIN | B07KBWVJMP |
| Best Sellers Rank | #118,397 in Home Improvement ( See Top 100 in Home Improvement ) #222 in Motion Detectors |
| Brand | Stemedu |
| Built-In Media | 1N Motion Sensor |
| Colour | Multi |
| Compatible Devices | Arduino, Raspberry Pi, Home Automation Systems, Security Systems |
| Customer Reviews | 4.4 out of 5 stars 338 Reviews |
| Importer Contact Information | Robocraze Banglore 9711444860 |
| Item Dimensions D x W x H | 20D x 8W x 15H Centimeters |
| Item Type Name | Motion Sensor |
| Item Weight | 60 Grams |
| Manufacturer | Robocraze Banglore 9711444860, Stemedu |
| Manufacturer Contact Information | Robocraze Banglore 9711444860 |
| Maximum Range | 21 Feet |
| Mfr Part Number | ST0057X5 |
| Model Number | 3216550596 |
| Mounting Type | Wall Mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| Packer Contact Information | Storescent India New Delhi 9711444860 |
| Power Source | Corded Electric |
| UPC | 747356632386 |
G**.
Did exactly what they were supposed to do
These sensors did exactly what they were supposed to do. they were easy to hook up to an Arduino and use in a sketch.
A**R
recommend
very pleased, arrived on time, everything works
P**N
Halloween animatronics
After a couple of decades, I decided to build some new life size figures using some of the latest sensors, relays, and motors. I'm using the HC-SR501 sensors to initiate the animatronics, and found a couple of issues. They work w/o issue, and will continue their use. I also wanted to incorporate a flame bulb that will go in the medieval torch I built out of PVC pipe/fittings, EVA foam, and modelling paste. Regardless of the input voltage, the HC-SR501 output trigger voltage is only 3.3V-3.4V DC. This means I can only use 5V DC opto-relays, instead of 12V opto-relays as their trigger voltage is >4.5V DC. This required making a 5V circuit to power the HC-SR501 and the relays. The video shows the DC-DC Buck converters (blue LEDs) and the 5V DC opto-relays (red LEDs) driving the HC-SR501, one motor, and the flame bulb. The simplified schematic shows the wiring layout I made with applied voltages. The second issue to note with the HC-SR501 is the delay pot. It only takes a 10 degree turn of the pot to go from the minimum delay time of one second to 25 seconds. Their sensitivity is very good. I have yet to try adding a thermistor to the HC-SR501 to test its night time capabilities. FYI: I'm using the B0CMXCZX9Y nylon standoffs (via Amazon) to mount all of these boards. UPDATE: I'm holding back from installing a thermistor. Low light sensitivity is excellent.
A**R
As per the HC-SR501 data sheet, stops detecting as temperature approaches 30 degrees celsius
As per the HC-SR501 data sheet, stops detecting ("detection range is shorter") as temperature approaches 30 degrees celsius (approximately 90 degrees fahrenheit). These units have the through-holes to add a thermistor to improve high temperature performance, if one has a thermistor to add. The real test is if starts detecting again when the temperature drops. I plan to drop my score one star for each unit that permanently fails on me. Worked just fine the first three days I had it connected. Easy to set up. Pins fit well into female Dupont wires for prototyping.
A**R
Guess they are okay
I haven't used them yet sorry
Trustpilot
2 weeks ago
1 month ago